What is the difference in server operation on node js with and without nginx?

Question

Nginx

What is the difference between node js working without and with nginx?
Do I need to install it and why?

As far as I understand, it is unlikely to somehow speed up the site, because node is already asynchronous and will cope with a bunch of requests, and the speed of transferring files and images will already depend on the speed of the Internet?

Answer 1

The difference is colossal.
Nginx is needed, at a minimum, to:
Efficiently distribute static (JS, CSS, images, fonts, etc.) Cache
responses
Terminate SSL Limit the
number of requests for protection
Act as a load balancer between multiple application instances
Filter HTTP headers / Add HTTP headers
Compress responses

Answer 2

Nginx is used as a reverse proxy to raise ssl